Gah, had a whole thing about why HYDRA as WS' bosses isn't such a hot idea but my browser crapped out on me.

Here's a question... What makes the "Perfect" way to reintroduce HYDRA aside. Why reintroduce them at all?

Also, HYDRA couldn't have been the ones to make Bucky into Winter Soldier.

Bucky went missing only a short period of time before HYDRA was attacked by the SSR.

They're on a mission to capture Zola. Bucky falls. They get Zola back to London where Philips instantly debriefs him. Philips then briefs Cap/Howlers that HYDRA's assault will commence in less than 24 hours.

He also says that HYDRA only has their base in the Alps.

The SSR clearly wins the battle against HYDRA.

All signs point to that at the end of the war, there wasn't a HYDRA to make Bucky into Winter Soldier at all.